Tetra
Chemical Name : Betulinic acid
CAS : 472-15-1
Synonyms: (3Beta)-3-hydroxy-lup-20(29)-en-28-oic acid;3Beta-hydroxy-20(29)-lupaene-28-oic acid;3Beta-hydroxylup-20(29)-en-28-oic acid;3B-hydroxy-20(29)-lupene-28-oic acid;Betulic acid;Betulinic acid;Lup-20(29)-en-28-oic acid, 3-hydroxy-, (3b)-;Lup-20(29)-en-28-oic acid, 3-hydroxy-, (3beta)-;Mairin
![Endo-bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylic anhydride](http://thsciimg.chemcd.cn/TS47521.gif)
